An explorer encounters sentient, extraterrestrial trees in Asian mountains. They plan to spread their pollen all over the Earth, but they are fortuitously destroyed by a volcano.; A curio shop owner tells customers that a strange statue is a burglar turned to stone by Medusa. No one believes him, but none dare open the door which he says leads to Medusa.; A sailor finds a note from a castaway, but on the island named he finds only a strange creature. When an alien ship arrives to pick up the creature, he realizes that it was a castaway.; A science fiction writer's imagination somehow makes the monster in his story real. He fights it until he can imagine it out of existence.